Stateflow get dimension of variable

5 vues (au cours des 30 derniers jours)
Roger Innes
Roger Innes le 15 Fév 2024
Commenté : Fangjun Jiang le 23 Fév 2024
I would like to get the dimension of an input/parameter to a stateflow model?
C code would be something like this.
Vartype Var[MaxArraySize];
size_t MaxArraySize = sizeof(Var) / sizeof(Vartype);

Réponses (1)

Fangjun Jiang
Fangjun Jiang le 15 Fév 2024
If action language is MATLAB, you can use size(input), or size(input,1), size(input,2)
  2 commentaires
Roger Innes
Roger Innes le 23 Fév 2024
The issue was I was indexing the matix on the same line. size( input )(x) which is invalid matlab syntax. Using size( input, x) where x = 1 I got the length of the 1 by 3 matrix as 3.
The error I was getting was.
Parse error: ()-indexing must appear last in an index expression. State 'Test' "size( input )"
Which made it hard to understand what I was doing wrong. Which lead me to concluded the "size" command was invalid but it works correctly in stateflow.
Fangjun Jiang
Fangjun Jiang le 23 Fév 2024
size( input )(x) is not valid in MATLAB.
"Using size( input, x) where x = 1 I got the length of the 1 by 3 matrix as 3"
If not specified, a 1x3 or 3x1 vector in Simulink shows size as 3 (at least in Simulink diagram signal line). If you specify the dimension of "input" as 1x3, I think size(input,1) will return 1.

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